Google Classroom
GeoGebraGeoGebra Classroom

Excenter/Excircle v2

With the given triangle, you extend two sides in the direction opposite their shared vertex. The chosen circle that is tangent to the two lines and to the other side of the triangle; this is called the Excircle or the escribed circle. The center of the circle of the excircle is called the Excenter and is on the external angle bisector of the opposite angle.